Messerschmitt Bf.109F, German Users - part six

The armament of the Bf.109F was modified and now consisted of two synchronized 7.92mm (0.312in) mounted above the engine plus one Motorkanone canon firing through the propeller hub. Opinions were mixed the new armament arrangement, Oberst. Adolf Galland criticised the new armament as being light and inadeuqate for the average pilot while Major Walther Oesau preferred to fly a Bf.109E and Oberst Werner Mölders saw the new arrangement as an improvement.
With the early tail unit problems fixed, the popular opinion among pilots was that the F variant was the one that could be handed the best. Mölders flew one of the first operational Bf.109F-1s over England in October 1940 with an excellent score of shooting down eight Hawker Hurricanes and four Supermarine Spitfires between 11th and 29th October 1940.
Given the shortage of the DB 601E engine, which wasn't available in enough numbers, the pre-production version, F-0 (which was the only one to feature a complete rectangular supercharger intake) and the first versions F-1 and F-2, were fitted with the 1159hp (864Kw 1175PS) DB 601N engine which drove a VDM 9-1127 propeller. The F-0 and F-1/F-2 versions differed only in the armament, as the F-1 was fitted with a 20mm MG FF/M Motorkanone firing through the propeller hub. F-1 served for the first time, as we said previously, in the late stages of the Battle of Britain, in October 1940 serving with the JG 51 manned by Werner Mölders. A total of 208 F-1s were manfuactured between August 1940 and February 1941 by Messerschmitt Regensburg and Wiener Neustädter Flugzeugwerke (WNF).
The F-2 variant replaced the MG FF by a 20mm Mauser MG 151 cannon and as that cannon became available, many of them were retrofitted with it in the field. Around 1230 F-2s were manufactured between October 1940 and August 1941 by AGO, Arado, Erla, Messerschmitt Regensburg and WNF. Initially there wasn't any tropicalized version, but many of them were converted on the field. There was also a projected high-altittude version of the F-2, called F-2/Z equipped with a GM-1 boost, but it was cancelled in favour of the F-4/Z.

Sources:
1. https://en.wikipedia.org/wiki/Messerschmitt_Bf_109_variants#Bf_109F
2. Salamander Books - The Complete Book of Fighters
3. Osprey - Air Vanguard 23 - Messerschmitt Bf 109 E-F series(1)
4. Signal Squadron - Aircraft In action  57 - Messerschmitt Bf-109 in Action Pt.2