[Cleaning viewfinder]

I think the window on the EVF is acrylic.  So blow off any dirt or dust and use a lens cloth.  Maybe damped a bit with water if needed.  I would not use lens cloths (the kind in sealed packs that are wet).  On my XT3 I noticed some coating coming off, or haze from scratches. 

 

[Fuji Birds]

Brown Pelican   XT3 with 100-400

[Winter Landscapes]

Hello

 

This was taken in Bishop, California- Eastern Sierra.  

Thanks,  Matt

[Winter Landscapes]

[Battery Management and the Fuji X-T2]

Two Canon batteries would outlive 5 Fuji.  Very disheartening when you have to carry a pocket full of batteries for a days outing.  That's one of my biggest disappointments with Fuji.  More than once I have been caught flat-footed having to change a battery at the most inopportune  moment.   I wouldn't trust them on  paid assignment.  

[Recommendations for an Old Macro Lens]

Depending on how close you want to get, I can recommend the Minolta 50mm MD macro.  It doesnt go to 1:1, but it is  sharp lens.  On par with the DSLR Canon lenses.  KEH usually has them in stock.  You can get it with the extension tube sometimes too.  Usually under $100.  Great lens.